What a good question and bednobs is correct.
Let us look at this very simply.....a woman, 36weeks pregnant with uncontrolled GD ( we don't know the age of the patient or whether she is a primigravida)
Scan on the 15Dec ( one week before Xmas) my guess would be, depending upon the size of the baby, they will induce her or offer her a Caesarian section within 24 hours of the scan (Dec 16)
Look at it this way: who wants a woman with uncontrolled GD with a big baby hanging about still undelivered at Christmas?
Get my point?